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https://www.readbyqxmd.com/read/29785440/an-immunoconjugated-up-conversion-nanocomplex-for-selective-imaging-and-photodynamic-therapy-against-her2-positive-breast-cancer
#1
Gonzalo Ramírez-García, Sandeep S Panikar, Tzarara López-Luke, Valeria Piazza, Miguel Angel Honorato-Colin, Tanya Camacho-Villegas, Rodolfo Hernández-Gutiérrez, Elder De la Rosa
Photodynamic therapy represents a very attractive therapeutic tool considered to be effective, minimally invasive and minimally toxic. However, conventional photodynamic therapy actually has two main constraints: the limited penetration depth of visible light needed for its activation, and the lack of selectivity. Considering this, this work reports the synthesis and evaluation of a novel nanoconjugate for imaging and selective photodynamic therapy against HER2-positive breast cancer, a particularly aggressive form of the disease...
May 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29785244/more-than-just-an-immunosuppressant-the-emerging-role-of-fty720-as-a-novel-inducer-of-ros-and-apoptosis
#2
REVIEW
Teruaki Takasaki, Kanako Hagihara, Ryosuke Satoh, Reiko Sugiura
Fingolimod hydrochloride (FTY720) is a first-in-class of sphingosine-1-phosphate (S1P) receptor modulator approved to treat multiple sclerosis by its phosphorylated form (FTY720-P). Recently, a novel role of FTY720 as a potential anticancer drug has emerged. One of the anticancer mechanisms of FTY720 involves the induction of reactive oxygen species (ROS) and subsequent apoptosis, which is largely independent of its property as an S1P modulator. ROS have been considered as a double-edged sword in tumor initiation/progression...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29785103/chinese-version-of-the-severe-respiratory-insufficiency-questionnaire-for-patients-with-copd-receiving-long-term-oxygen-therapy
#3
Lili Guan, Jiawen Xu, Weiliang Wu, Jianhua Chen, Xiaoying Li, Bingpeng Guo, Yuqiong Yang, Yating Huo, Luqian Zhou, Rongchang Chen
Purpose: Patients with advanced-stage COPD often experience severe hypoxemia. Treatment with long-term oxygen therapy (LTOT) may relieve patients' symptoms and increase survival. As COPD is incurable, improving patients' health-related quality of life is important. The Chinese version of the Severe Respiratory Insufficiency Questionnaire (SRI) is valid for patients with hypercapnic COPD undergoing noninvasive positive airway pressure ventilation at home. However, the reliability and validity of the Chinese SRI for patients with COPD undergoing LTOT have not been investigated...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29784452/regulation-of-the-oxidative-balance-with-coenzyme-q10-sensitizes-human-glioblastoma-cells-to-radiation-and-temozolomide
#4
Javier Frontiñán-Rubio, Raquel María Santiago-Mora, Consuelo María Nieva-Velasco, Gustavo Ferrín, Alicia Martínez-González, María Victoria Gómez, María Moreno, Julia Ariza, Eva Lozano, Jacinto Arjona-Gutiérrez, Antonio Gil-Agudo, Manuel De la Mata, Milica Pesic, Juan Ramón Peinado, José M Villalba, Luis Pérez-Romasanta, Víctor M Pérez-García, Francisco J Alcaín, Mario Durán-Prado
OBJECTIVES: To investigate how the modulation of the oxidative balance affects cytotoxic therapies in glioblastoma, in vitro. MATERIAL AND METHODS: Human glioblastoma U251 and T98 cells and normal astrocytes C8D1A were loaded with coenzyme Q10 (CoQ). Mitochondrial superoxide ion (O2 - ) and H2 O2 were measured by fluorescence microscopy. OXPHOS performance was assessed in U251 cells with an oxytherm Clark-type electrode. Radio- and chemotherapy cytotoxicity was assessed by immunostaining of γH2AX (24 h), annexin V and nuclei morphology, at short (72 h) and long (15 d) time...
May 18, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29783818/-continuous-renal-replacement-therapy-combined-with-extracorporeal-membrane-oxygenation-for-pediatric-cardiopulmonary-failure
#5
Y P Zhou, J Y Shi, F Wang, Y Cui, T T Xu, C X Wang, Y C Zhang
Objective: To explore the effectiveness and safety of continuous renal replacement therapy (CRRT) combined with extracorporeal membrane oxygenation (ECMO) on rescuing pediatric patients with cardiopulmonary failure. Methods: The medical records of patients treated with ECMO admitted to pediatric intensive care unit (PICU) in Shanghai Children's Hospital from December 2015 to November 2017 were retrospectively extracted. There were 14 patients treated with ECMO combined with CRRT (ECMO+ CRRT group) due to acute kidney injury (AKI) or fluid overload, while 11 cases treated with ECMO only...
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29783745/loading-of-indocyanine-green-within-polydopamine-coated-laponite-nanodisks-for-targeted-cancer-photothermal-and-photodynamic-therapy
#6
Fanli Xu, Mengxue Liu, Xin Li, Zhijuan Xiong, Xueyan Cao, Xiangyang Shi, Rui Guo
The combination of photothermal therapy (PTT) and photodynamic therapy (PDT) in cancer treatment has attracted much attention in recent years. However, developing highly efficient and targeted therapeutic nanoagents for amplifying PTT and PDT treatments remains challenging. In this work, we developed a novel photothermal and photodynamic therapeutic nanoplatform for treatment of cancer cells overexpressing integrin αv β₃ through the coating of polydopamine (PDA) on indocyanine green (ICG)-loaded laponite (LAP) and then further conjugating polyethylene glycol-arginine-glycine-aspartic acid (PEG-RGD) as targeted agents on the surface...
May 19, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29783654/recent-progress-in-upconversion-photodynamic-therapy
#7
REVIEW
Hailong Qiu, Meiling Tan, Tymish Y Ohulchanskyy, Jonathan F Lovell, Guanying Chen
Photodynamic therapy (PDT) is a minimally invasive cancer modality that combines a photosensitizer (PS), light, and oxygen. Introduction of new nanotechnologies holds potential to improve PDT performance. Upconversion nanoparticles (UCNPs) offer potentially advantageous benefits for PDT, attributed to their distinct photon upconverting feature. The ability to convert near-infrared (NIR) light into visible or even ultraviolet light via UCNPs allows for the activation of nearby PS agents to produce singlet oxygen, as most PS agents absorb visible and ultraviolet light...
May 18, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29783230/comprehensive-patterns-of-comorbidity-copd-and-depression-aspects-of-treatment
#8
Natalia V Moisieieva, Liliya V Burya, Anna A Kapustianskaya, Iryna A Kolenko, Maria A Rumyantseva, Oleksii H Shumeiko
OBJECTIVE: Introduction: Data on the prevalence of psychopathological disorders in the exacerbation of chronic obstructive pulmonary disease (COPD) are very heterogeneous. COPD and depression have common predisposing factors. The aim: The aim of the research is to conduct a comprehensive assessment of the effect of paroxetine on the level of depressive disorders in the exacerbation of severe degree COPD in women. PATIENTS AND METHODS: Materials and methods: The study included patients with severe degree COPD and depressive disorder...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29781778/express-the-optimization-of-iloprost-inhalation-under-moderate-flow-of-oxygen-therapy-in-severe-pulmonary-arterial-hypertension
#9
Kazuhiko Nakayama, Noriaki Emoto, Naoki Tamada, Mistumasa Okano, Yuto Shinkura, Ken-Ichi Yanaka, Hiroyuki Onishi, Mana Hiraishi, Shinichiro Yamada, Hidekazu Tanaka, Toshiro Shinke, Ken-Ichi Hirata
No abstract text is available yet for this article.
January 1, 2018: Pulmonary Circulation
https://www.readbyqxmd.com/read/29781276/light-induced-hypoxia-triggered-living-nanocarriers-for-synergistic-cancer-therapy
#10
Wenliang Wang, Lin Lin, Xiaojing Ma, Bo Wang, Sanrong Liu, Xinxin Yan, Shengran Li, Huayu Tian, Xifei Yu
Living drug delivery system has been proposed as new concept materials since it is able to communicate with biological system, sense subtle changes of body microenvironment caused by disease and then make rapid response to cure in early stage of disease. Herein, taking full advantage of the tumor hypoxia physiology and successive effects of photodynamic therapy (PDT), we designed a new living delivery system via combining the PDT and hypoxia-responsive chemotherapy, abbreviated as Ce6-PEG-Azo-PCL. Then, according to the facts that oxygen can be converted into reactive oxygen species during irradiation of the photosensitizer, tumor cells could be killed after the poly(ethylene glycol) (PEG) conjugated photosensitizer chlorine e6 were irradiated at tumor site...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29781122/protective-effects-of-endothelial-progenitor-cell-derived-extracellular-mitochondria-in-brain-endothelium
#11
Kazuhide Hayakawa, Su Jing Chan, Emiri T Mandeville, Ji Hyun Park, Morgan Bruzzese, Joan Montaner, Ken Arai, Anna Rosell, Eng H Lo
Endothelial progenitor cells (EPCs) have been pursued as a potential cellular therapy for stroke and central nervous system injury. However, their underlying mechanisms remain to be fully defined. Recent experimental studies suggest that mitochondria may be released and transferred between cells. In this proof-of-concept study, we asked whether beneficial effects of EPCs may partly involve a mitochondrial phenomenon as well. First, EPC-derived conditioned medium was collected and divided into supernatant and particle fractions after centrifugation...
May 21, 2018: Stem Cells
https://www.readbyqxmd.com/read/29780488/a-pre-protective-strategy-for-precise-tumor-targeting-and-efficient-photodynamic-therapy-with-a-switchable-dna-upconversion-nanocomposite
#12
Zhengze Yu, Yegang Ge, Qiaoqiao Sun, Wei Pan, Xiuyan Wan, Na Li, Bo Tang
Tumor-specific targeting based on folic acid (FA) is one of the most common and significant approaches in cancer therapy. However, the expression of folate receptors (FRs) in normal tissues will lead to unexpected targeting and unsatisfactory therapeutic effect. To address this issue, we develop a pre-protective strategy for precise tumor targeting and efficient photodynamic therapy (PDT) using a switchable DNA/upconversion nanocomposite, which can be triggered in the acidic tumor microenvironment. The DNA/upconversion nanocomposite is composed of polyacrylic acid (PAA) coated upconversion nanoparticles (UCNPs), the surface of which is modified using FA and chlorin e6 (Ce6) functionalized DNA sequences with different lengths...
April 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29780244/severity-of-acidosis-affects-long-term-survival-in-copd-patients-with-hypoxemia-after-intensive-care-unit-discharge
#13
Sinem Gungor, Feyza Kargin, Ilim Irmak, Fulya Ciyiltepe, Eylem Acartürk Tunçay, Pinar Atagun Guney, Emine Aksoy, Birsen Ocakli, Nalan Adiguzel, Zuhal Karakurt
Background: Patients admitted to the intensive care unit (ICU) with acute respiratory failure (ARF) due to COPD have high mortality and morbidity. Acidosis has several harmful effects on hemodynamics and metabolism, and the current knowledge regarding the relationship between respiratory acidosis severity on the short- and long-term survival of COPD patients is limited. We hypothesized that COPD patients with severe acidosis would have a poorer short- and long-term prognosis compared with COPD patients with mild-to-moderate acidosis...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29780032/severe-outcomes-associated-with-respiratory-viruses-in-newborns-and-infants-a-prospective-viral-surveillance-study-in-jordan
#14
Najwa Khuri-Bulos, Lindsey Lawrence, Bhinnata Piya, Li Wang, Christopher Fonnesbeck, Samir Faouri, Asem Shehabi, Sten H Vermund, John V Williams, Natasha B Halasa
OBJECTIVE: To assess virus-specific hospitalisation rates, risk factors for illness severity and seasonal trends in children hospitalised with acute respiratory infections (ARI). DESIGN: Prospective cohort study. SETTING: A government hospital serving low-income and middle-income population in Amman, Jordan. PARTICIPANTS: Children under 2 years of age hospitalised with fever and/or respiratory symptoms (n=3168) from 16 March 2010 to 31 March 2013...
May 20, 2018: BMJ Open
https://www.readbyqxmd.com/read/29779217/ginsenoside-c-mx-isolated-from-notoginseng-stem-leaf-ginsenosides-attenuates-ultraviolet-b-mediated-photoaging-in-human-dermal-fibroblasts
#15
Xiao-Yi Liu, Eunson Hwang, Bom Park, Hien T T Ngo, Yong-Kun Xiao, Tae-Hoo Yi
Notoginseng is a traditional herbal medicine widely used for medicinal therapy in Asia, as it contains numerous ginsenosides with pharmacological effects. In this study, we submitted Notoginseng stem-leaf (NGL) ginsenosides to an enzyme to create reaction the monomer products of ginsenoside C-Mx and then investigated the ability of ginsenoside C-Mx to protect the skin against ultraviolet B-induced injury in normal human dermal fibroblasts (NHDFs). Ginsenoside C-Mx alleviated UVB-induced intracellular reactive oxygen species (ROS), MMP-1, and IL-6 expression while accelerating TGF-β and procollagen type I secretion...
May 20, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29778861/multicenter-randomized-controlled-crossover-trial-comparing-hemodynamic-optimization-against-echocardiographic-optimization-of-av-and-vv-delay-of-cardiac-resynchronization-therapy-the-bravo-trial
#16
Zachary I Whinnett, S M Afzal Sohaib, Mark Mason, Edward Duncan, Mark Tanner, David Lefroy, Mohamed Al-Obaidi, Sue Ellery, Francisco Leyva-Leon, Tim Betts, Mark Dayer, Paul Foley, Jon Swinburn, Martin Thomas, Raj Khiani, Tom Wong, Zaheer Yousef, Dominic Rogers, Paul R Kalra, Vignesh Dhileepan, Katherine March, James Howard, Andreas Kyriacou, Jamil Mayet, Prapa Kanagaratnam, Michael Frenneaux, Alun D Hughes, Darrel P Francis
OBJECTIVES: BRAVO (British Randomized Controlled Trial of AV and VV Optimization) is a multicenter, randomized, crossover, noninferiority trial comparing echocardiographic optimization of atrioventricular (AV) and interventricular delay with a noninvasive blood pressure method. BACKGROUND: Cardiac resynchronization therapy including AV delay optimization confers clinical benefit, but the optimization requires time and expertise to perform. METHODS: This study randomized patients to echocardiographic optimization or hemodynamic optimization using multiple-replicate beat-by-beat noninvasive blood pressure at baseline; after 6 months, participants were crossed over to the other optimization arm of the trial...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29777786/photoselective-vaporisation-of-the-bladder-for-the-management-of-radiation-cystitis-technique-and-initial-outcomes
#17
Claire Pascoe, Daniel Christidis, Todd Manning, Benjamin W Lamb, Declan G Murphy, Nathan Lawrentschuk
Objective To describe our technique utilising photoselective vaporisation of the bladder (PVB) for the management of haemorrhagic cystitis and initial results of 12 patients. Materials and Method An audit of theatre records of a single surgeon was performed to identify patients who had undergone PVB for management of radiation-cystitis. TECHNIQUE: Rigid cystoscopy was performed. Ureteric catheters were placed and active bleeding sites targeted to optimise vision. Ablation was commenced using the vaporize function...
May 16, 2018: Urology
https://www.readbyqxmd.com/read/29777580/context-encoding-enables-machine-learning-based-quantitative-photoacoustics
#18
Thomas Kirchner, Janek Gröhl, Lena Maier-Hein
Real-time monitoring of functional tissue parameters, such as local blood oxygenation, based on optical imaging could provide groundbreaking advances in the diagnosis and interventional therapy of various diseases. Although photoacoustic (PA) imaging is a modality with great potential to measure optical absorption deep inside tissue, quantification of the measurements remains a major challenge. We introduce the first machine learning-based approach to quantitative PA imaging (qPAI), which relies on learning the fluence in a voxel to deduce the corresponding optical absorption...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29775867/phytochemical-profiles-phototoxic-and-antioxidant-properties-of-eleven-hypericum-species-a-comparative-study
#19
Edoardo Napoli, Laura Siracusa, Giuseppe Ruberto, Alessandra Carrubba, Silvia Lazzara, Antonio Speciale, Francesco Cimino, Antonella Saija, Mariateresa Cristani
Hypericum is one out of the nine genera belonging to the botanical family Clusiaceae Lindl (syn. Hypericaceae Juss.; APG III, 2009). The genus contains 484 species spread worldwide, one of which, Hypericum perforatum, is largely used in folk medicine. The aim of this study was to evaluate the chemical composition, along with the antioxidant and phototoxic activity, of 11 Hypericum species grown in Sicily (H. perforatum L., H. aegypticum L., H. androsaemum L., H. calycinum L., H. hircinum L., H. hirsutum L...
May 15, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29775554/outcomes-and-predictors-of-early-infection-after-heart-transplantation
#20
Kendall C Shultes, Jerrica E Shuster, Scott Micek, Justin M Vader, Keki Balsara, Akinobu Itoh, Bethany R Tellor
BACKGROUND: Limited data exist on the incidence and outcome of early infection after orthotopic heart transplantation (OHT). The purpose of this study was to describe characteristics and outcomes of OHT recipients with an early infection and to identify predictors of such infections. METHODS: This retrospective, single-center study included patients greater than 18 years of age who underwent OHT from February 2009 to May 2014 and had an infection within 30 days of transplantation...
May 18, 2018: Surgical Infections
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